CVE-2026-17623 Langflow is affected OS Command Injection in Model Context Protocol features
Remote authenticated attackers can execute arbitrary commands via improper validation in MCP server configurations, requiring a patch.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17623?
CVE-2026-17623 is a high-severity command injection vulnerability in Langflow Langflow, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of the command field in MCP server configurations.
Weakness: CWE-78
Which versions are affected by CVE-2026-17623?
It affects 1 product.
Products include Langflow Langflow.
How do I fix CVE-2026-17623?
No fix has been published for CVE-2026-17623 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-17623 being exploited?
There is no known exploitation of CVE-2026-17623 in the wild and no public exploit code.
Other vulnerabilities in Langflow Langflow
Sources
Also known as GHSA-7rx7-4wfr-4qqv.